I see no problem here using version 3.1g for Windows.

For the normal you might be able to use:

#declare Bump=normal {bump_map {gif "bumpy.gif" scale 3}}
#declare Regular=normal {bumps 2}

 normal {average normal_map {
  [1 Bump]
  [1 Regular]
 }}


Bob

Xplo Eristotle <inq### [at] unforgettablecom> wrote in message
news:3828C0A7.39F0A26B@unforgettable.com...
> Also (and I almost hate to ask because it's probably in the dox), is it
> possible to superimpose a bump_map on top of an "ordinary" normal, or
> vice-versa? I wanted to create a "rough stone with some carvings" look
> and this was the only way I could think of to do it without making
> comprehensively large bump_maps...
>

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